We have an issue trying to set a multi-select parameter in ssrs-2016 via the Manage->Parameters menu in ssrs-2016 itself. parameter has available values, it works in the report normally. but when going into set some defaults via the ssrs website, the available listing is blank. is there something that I am missing?
What I find interesting is that the rendering of the list in the report looks very much like it hasn't changed from ssrs-2008 r2. I have tried creating a new report with just a single report parameter and I get the same thing.